VAG shown the right rear door can not find after replace a door lock
 

hi, i just replace right rear door lock with a second hand lock, and after that the new replaced lock is working fine, but there have some noise after push the unlock button on the key, sounds like the lock lock twice. and everytime when i turn on the car, all the door unlock once. this never happened.

After i connect the VAG, there shown '.can not find right rear door'.

I just wordering is anyone know what is this message about, is this about the lock replacement or it from another component.

Sounds like a wiring issue with the new lock and the CCM is not "seeing" the lock actuate. Would take the door apart and double check the seating of the connector, wire harness for breaks, etc.